: not yielding or responsive to medical treatment : not treatable
an untreatable disease
These infections cause an untreatable degeneration of the nervous system …Jared Diamond
The location of the cancer rendered him untreatable by further surgery.Nancy J. Kubel

Examples of untreatable in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Until now, the most common mutation in pancreatic cancer tumors was considered untreatable. Lisa Hughes, CBS News, 30 July 2026 Conditions that were once considered untreatable are now the subject of active clinical trials. Eliza Goldwasser, New York Daily News, 20 July 2026 The applause came for the medication’s ability to block the spread of the deadly disease, long considered untreatable with drugs. Paul Sisson, San Diego Union-Tribune, 6 July 2026 Experts highlight that the scans frequently reveal harmless anomalies or untreatable conditions, rather than actionable early detections. Joshua P. Cohen, Forbes.com, 2 July 2026 See All Example Sentences for untreatable

Word History

First Known Use

1865, in the meaning defined above

Time Traveler
The first known use of untreatable was in 1865

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Cite this Entry

“Untreatable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreatable. Accessed 4 Aug. 2026.

Medical Definition

untreatable

adjective
: not susceptible to medical treatment
untreatable patients
an untreatable disease
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